The Science Craft Mineralogy Manual

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Page 70tinguished from calcite by using 5% hydrochloric acid as in Experiment 50 (c).
CRYOLITE — sodium aluminum fluoride — Na2AlFe Cryolite was named from
the two Greek words for "frost" and "stone" because it resembles snow-ice.
Crystals ...

Page 71LIMESTONE — This is a rock composed of tiny crystals of calcite. The limestone
may be white, yellow, bluish, red, gray or black, depending upon the impurity.
The rock may be very fine or very granular (grains large enough to be visible to
the ...

Page 72The many different uses of calcite include building stone, use in cement, a flux in
preparing metals from their ores, ornamental stones, statuary, preparation of
carbon dioxide gas, and lime. Physical Properties: Color — usually white or
yellow, ...